From manual page: https://php.net/language.references.whatare
Incorrect code fragment:
`<?php
var = "foo";
$ref1 =& $var; // new object that references $var
$ref2 =& $ref1; // references $var directly, not $ref1!!!!!
echo $ref; // >foo
unset($ref);
echo $ref1; // >Notice: Undefined variable: ref1
echo $ref2; // >foo
echo $var; // >foo
?>`
From manual page: https://php.net/language.references.whatare
Incorrect code fragment:
`<?php
var = "foo";
$ref1 =& $var; // new object that references $var
$ref2 =& $ref1; // references $var directly, not $ref1!!!!!
echo $ref; // >foo
unset($ref);
echo $ref1; // >Notice: Undefined variable: ref1
echo $ref2; // >foo
echo $var; // >foo
?>`